Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Researchers discover breakthrough technique that could make electronics smaller and better

In a breakthrough study to improve the manufacturing of optical and electronic devices, University of Minnesota researchers introduced a new patterning technology, atomic layer lithography, based on a layering technique at the atomic level. A layer of metal fills the nano-patterns over an entire wafer and simple Scotch Magic tape was used to remove the excess metal on the surface and expose the atomic scale nano-gaps.
In a breakthrough study to improve the manufacturing of optical and electronic devices, University of Minnesota researchers introduced a new patterning technology, atomic layer lithography, based on a layering technique at the atomic level. A layer of metal fills the nano-patterns over an entire wafer and simple Scotch Magic tape was used to remove the excess metal on the surface and expose the atomic scale nano-gaps.

Abstract:
An international group of researchers from the University of Minnesota, Argonne National Laboratory and Seoul National University have discovered a groundbreaking technique in manufacturing nanostructures that has the potential to make electrical and optical devices smaller and better than ever before. A surprising low-tech tool of Scotch Magic tape ended up being one of the keys to the discovery.

Researchers discover breakthrough technique that could make electronics smaller and better

Minneapolis, MN | Posted on September 5th, 2013

The research is published today in Nature Communications, an international online research journal.

Combining several standard nanofabrication techniques—with the final addition of the Scotch Magic tape—researchers at the University of Minnesota created extremely thin gaps through a layer of metal and patterned these tiny gaps over the entire surface of a four-inch silicon wafer. The smallest gaps were only one nanometer wide, much smaller than most researchers have been able to achieve. In addition, the widths of the gaps could be controlled on the atomic level. This work provides the basis for producing new and better nanostructures that are at the core of advanced electronic and optical devices.

One of the potential uses of nanometer-scale gaps in metal layers is to squeeze light into spaces much smaller than is otherwise possible. Collaborators at Seoul National University, led by Prof. Dai-Sik Kim, and Argonne National Laboratory, led by Dr. Matthew Pelton, showed that light could readily be squeezed through these gaps, even though the gaps are hundreds or even thousands of times smaller than the wavelength of the light used. Researchers are very interested in forcing light into small spaces because this is a way of boosting the intensity of the light. The collaborators found that the intensity inside the gaps is increased by as much as 600 million times.

"Our technology, called atomic layer lithography, has the potential to create ultra-small sensors with increased sensitivity and also enable new and exciting experiments at the nanoscale like we've never been able to do before," said Sang-Hyun Oh, one of the lead researchers on the study and a professor of electrical and computer engineering in the University of Minnesota's College of Science and Engineering. "This research also provides the basis for future studies to improve electronic and photonic devices."

One of the most surprising outcomes of the research is that Scotch Magic tape was one of the keys to the discovery. Etching one-nanometer-wide gaps into metals is not feasible with existing tools. Instead, the researchers in Oh's team constructed the nano-gaps by layering atomic-scale thin films on the sides of metal patterns and then capping the structure with another metal layer. No expensive patterning tools were needed to form the gaps this way, but it was challenging to remove the excess metals on top and expose the tiny gaps. During a frustrating struggle of trying to find a way to remove the metal films, University of Minnesota Ph.D. student and lead author of the study Xiaoshu Chen found that by using simple Scotch Magic tape, the excess metals could be easily removed.

"The Scotch tape works nicely, which was unexpected," said Oh. "Our technique is so simple yet can create uniform and ultra-small gaps like we've never been able to do before. We hope that it will rapidly be taken up by many researchers."

In addition to Oh and Chen, researchers involved in the study include a joint lead author Hyeong-Ryeol Park, who was a Ph.D. student at Seoul National University and is now a postdoc in Oh's group at the University of Minnesota; Matthew Pelton, a staff physicist at Argonne National Laboratory who is now a professor of physics at the University of Maryland, Baltimore County; Nathan Lindquist, a former Ph.D. student at the University of Minnesota who is now a professor of physics at Bethel University in St. Paul; Hyungsoon Im, a former electrical and computer engineering Ph.D. student who is now a postdoc at Harvard Medical School; and Xianji Piao, Yun Jung Kim, Jae Sung Ahn, Kwang Jun Ahn, Prof. Namkyoo Park, and Prof. Dai-Sik Kim, all from Seoul National University in Korea.

This research was funded by the U.S. Department of Defense (DARPA Young Faculty Award and the ONR Young Investigator Program), the U.S. Department of Energy and the National Research Foundation of Korea with capital equipment funding from the Minnesota Partnership for Biotechnology and Medical Genomics.

####

For more information, please click here

Contacts:
Rhonda Zurn
College of Science and Engineering

612-626-7959

Brooke Dillon
University News Service

(612) 624-2801

Copyright © University of Minnesota

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

To read the full research paper entitled, "Atomic layer lithography of wafer-scale nanogap arrays for extreme confinement of electromagnetic waves," visit the Nature Communications website:

Related News Press

News and information

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Maximum Precision in 3D Printing: New complete solution makes additive manufacturing standard for microfabrication February 26th, 2015

Laboratories

Dendrite eraser: New electrolyte rids batteries of short-circuiting fibers: Solution enables a battery with both high efficiency & current density February 24th, 2015

Researchers synthesize material for efficient plasmonic devices in mid-infrared range February 16th, 2015

New design tool for metamaterials: Berkeley Lab study shows how to predict metamaterial nonlinear optical properties February 10th, 2015

X-ray pulses uncover free nanoparticles for the first time in 3-D 'Super microscope' reveals unexpected variety of shapes February 4th, 2015

Govt.-Legislation/Regulation/Funding/Policy

Warming up the world of superconductors: Clusters of aluminum metal atoms become superconductive at surprisingly high temperatures February 25th, 2015

SUNY Poly CNSE Researchers and Corporate Partners to Present Forty Papers at Globally Recognized Lithography Conference: SUNY Poly CNSE Research Group Awarded Both ‘Best Research Paper’ and ‘Best Research Poster’ at SPIE Advanced Lithography 2015 forum February 25th, 2015

European roadmap for graphene science and technology published February 25th, 2015

Dendrite eraser: New electrolyte rids batteries of short-circuiting fibers: Solution enables a battery with both high efficiency & current density February 24th, 2015

Chip Technology

New nanowire structure absorbs light efficiently: Dual-type nanowire arrays can be used in applications such as LEDs and solar cells February 25th, 2015

SUNY Poly CNSE Researchers and Corporate Partners to Present Forty Papers at Globally Recognized Lithography Conference: SUNY Poly CNSE Research Group Awarded Both ‘Best Research Paper’ and ‘Best Research Poster’ at SPIE Advanced Lithography 2015 forum February 25th, 2015

Ultra-thin nanowires can trap electron 'twisters' that disrupt superconductors February 24th, 2015

Silicon Catalyst Announces Partnership With imec to Support Semiconductor Start-Ups February 23rd, 2015

Discoveries

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Graphene shows potential as novel anti-cancer therapeutic strategy: University of Manchester scientists have used graphene to target and neutralise cancer stem cells while not harming other cells February 26th, 2015

Announcements

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Graphene shows potential as novel anti-cancer therapeutic strategy: University of Manchester scientists have used graphene to target and neutralise cancer stem cells while not harming other cells February 26th, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Real-time observation of bond formation by using femtosecond X-ray liquidography February 26th, 2015

Graphene shows potential as novel anti-cancer therapeutic strategy: University of Manchester scientists have used graphene to target and neutralise cancer stem cells while not harming other cells February 26th, 2015

Military

Simulating superconducting materials with ultracold atoms: Rice physicists build superconductor analog, observe antiferromagnetic order February 23rd, 2015

Perfect colors, captured with one ultra-thin lens: No need for color correction -- Harvard physicists' flat optics, using nanotechnology, get it right the first time February 19th, 2015

Penn researchers develop new technique for making molybdenum disulfide: Extra control over monolayer material with advantages over graphene February 19th, 2015

New nanogel for drug delivery: Self-healing gel can be injected into the body and act as a long-term drug depot February 19th, 2015

Research partnerships

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

European roadmap for graphene science and technology published February 25th, 2015

KIT Increases Commitment in Asia: DAAD Funds Two New Projects: Strategic Partnerships with Chinese Universities and Communi-cation Technologies Network February 22nd, 2015

Increasing Efficiency of Cooling Devices in Oil, Gas Industries February 21st, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE